1 # Copyright (C) 1991-2000,01,02, 03 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with the GNU C Library; if not, write to the Free
16 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # Makefile configuration options for the GNU C library.
23 This makefile requires GNU Make.
26 all: # Make this the default goal
28 ifneq "$(origin +included-Makeconfig)" "file"
30 +included-Makeconfig := yes
36 # If config.make exists, the source directory was configured,
37 # so don't try to be clever and find another directory to build in.
38 ifneq (,$(wildcard $(..)config.make))
41 else # Not configured.
49 # Directory for object files and libc.a. If this is not defined, the
50 # object files live in the subdirectories where their sources live, and
51 # libc.a lives in the parent directory (this probably doesn't work any
54 ifeq ($(filter /%,$(ARCH)),)
55 objdir := $(..)$(ARCH)
61 # $(common-objdir) is the place to put objects and
62 # such that are not specific to a single subdir.
64 objpfx := $(patsubst %//,%/,$(objdir)/$(subdir)/)
65 common-objpfx = $(objdir)/
66 common-objdir = $(objdir)
73 # This is a kludge. make wizards might grok.
74 common-objpfx = sysdeps/../
79 # Root of the sysdeps tree.
80 sysdep_dir := $(..)sysdeps
81 export sysdep_dir := $(sysdep_dir)
83 # Get the values defined by options to `configure'.
84 include $(common-objpfx)config.make
86 # What flags to give to sources which call user provided callbacks
87 uses-callbacks = $(exceptions)
89 # What flags to give to tests which test stack alignment
90 stack-align-test-flags =
92 # We have a special subdir for each binary format.
93 # For now, only ELF is fully supported.
97 # This is probably better than nothing.
101 # Complete path to sysdep dirs.
102 export full_config_sysdirs := $(addprefix $(..),$(config-sysdirs))
104 # Run config.status to update config.make and config.h. We don't show the
105 # dependence of config.h to Make, because it is only touched when it
106 # changes and so config.status would be run every time; the dependence of
107 # config.make should suffice to force regeneration and re-exec, and the new
108 # image will notice if config.h changed.
109 $(common-objpfx)config.make: $(common-objpfx)config.status \
110 $(..)config.make.in $(..)config.h.in
111 cd $(<D); $(SHELL) $(<F)
113 # Find all the sysdeps configure fragments, to make sure we re-run
114 # configure when any of them changes.
115 $(common-objpfx)config.status: $(..)version.h $(..)configure \
116 $(foreach dir,$(full_config_sysdirs),\
120 $(firstword $(wildcard \
121 $(addprefix $(dir)/,configure configure.in)))))
122 @cd $(@D); if test -f $(@F); then exec $(SHELL) $(@F) --recheck; else \
123 echo The GNU C library has not been configured. >&2; \
124 echo Run \`configure\' to configure it before building. >&2; \
125 echo Try \`configure --help\' for more details. >&2; \
128 # We don't want CPPFLAGS to be exported to the command running configure.
131 # Get the user's configuration parameters.
132 ifneq ($(wildcard $(..)configparms),)
133 include $(..)configparms
136 ifneq ($(wildcard $(common-objpfx)configparms),)
137 include $(common-objpfx)configparms
142 #### These are the configuration variables. You can define values for
143 #### the variables below in the file `configparms'.
144 #### Do NOT edit this file.
148 # Common prefix for machine-independent installation directories.
149 ifeq ($(origin prefix),undefined) # ifndef would override explicit empty value.
153 # Decide whether we shall build the programs or not. We always do this
154 # unless the user tells us (in configparms) or we are building for a
156 ifndef build-programs
157 ifneq ($(config-os),none)
164 # Common prefix for machine-dependent installation directories.
165 ifeq ($(origin exec_prefix),undefined)
166 exec_prefix = $(prefix)
169 # Where to install the library and object files.
171 libdir = $(exec_prefix)/lib
173 inst_libdir = $(install_root)$(libdir)
175 # Where to install the shared library and dynamic linker.
177 slibdir = $(exec_prefix)/lib
179 inst_slibdir = $(install_root)$(slibdir)
181 # Prefix to put on files installed in $(libdir). For libraries `libNAME.a',
182 # the prefix is spliced between `lib' and the name, so the linker switch
183 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
184 # just prepended to the whole file name.
185 ifeq ($(origin libprefix),undefined)
189 # Where to install the header files.
191 includedir = $(prefix)/include
193 inst_includedir = $(install_root)$(includedir)
195 # Where to install machine-independent data files.
196 # These are the timezone database, and the locale database.
198 datadir = $(prefix)/share
200 inst_datadir = $(install_root)$(datadir)
202 # Where to install the timezone data files (which are machine-independent).
204 zonedir = $(datadir)/zoneinfo
206 inst_zonedir = $(install_root)$(zonedir)
208 # Where to install the locale files.
210 localedir = $(libdir)/locale
212 inst_localedir = $(install_root)$(localedir)
214 # Where to install the message catalog data files (which are
215 # machine-independent).
217 msgcatdir = $(datadir)/locale
219 inst_msgcatdir = $(install_root)$(msgcatdir)
221 # Where to install the locale charmap source files.
223 i18ndir = $(datadir)/i18n
225 inst_i18ndir = $(install_root)$(i18ndir)
227 # Where to install the shared object for charset transformation.
229 gconvdir = $(libdir)/gconv
231 inst_gconvdir = $(install_root)$(gconvdir)
233 # Where to install programs.
235 bindir = $(exec_prefix)/bin
237 inst_bindir = $(install_root)$(bindir)
239 # Where to install internal programs.
241 libexecdir = $(exec_prefix)/libexec
243 inst_libexecdir = $(install_root)$(libexecdir)
245 # Where to install administrative programs.
247 rootsbindir = $(exec_prefix)/sbin
249 inst_rootsbindir = $(install_root)$(rootsbindir)
252 sbindir = $(exec_prefix)/sbin
254 inst_sbindir = $(install_root)$(sbindir)
256 # Where to install the Info files.
258 infodir = $(prefix)/info
260 inst_infodir = $(install_root)$(infodir)
262 # Where to install default configuration files. These include the local
263 # timezone specification and network data base files.
265 sysconfdir = $(prefix)/etc
267 inst_sysconfdir = $(install_root)$(sysconfdir)
269 # What timezone should be the installed default (e.g., US/Eastern).
270 # Run `make -C time echo-zonenames' to see a list of available zone names.
271 # The local timezone can be changed with `zic -l TIMEZONE' at any time.
276 # Where to install the "localtime" timezone file; this is the file whose
277 # contents $(localtime) specifies. If this is a relative pathname, it is
278 # relative to $(zonedir). It is a good idea to put this somewhere
279 # other than there, so the zoneinfo directory contains only universal data,
280 # localizing the configuration data elsewhere.
281 ifndef localtime-file
282 localtime-file = $(sysconfdir)/localtime
283 inst_localtime-file = $(install_root)$(localtime-file)
286 # What to use for leap second specifications in compiling the default
287 # timezone files. Set this to `/dev/null' for no leap second handling as
288 # 1003.1 requires, or to `leapseconds' for proper leap second handling.
289 # Both zone flavors are always available as `posix/ZONE' and `right/ZONE'.
290 # This variable determines the default: if it's `/dev/null',
291 # ZONE==posix/ZONE; if it's `leapseconds', ZONE==right/ZONE.
293 leapseconds = /dev/null
296 # What timezone's DST rules should be used when a POSIX-style TZ
297 # environment variable doesn't specify any rules. For 1003.1 compliance
298 # this timezone must use rules that are as U.S. federal law defines DST.
299 # Run `make -C time echo-zonenames' to see a list of available zone names.
300 # This setting can be changed with `zic -p TIMEZONE' at any time.
301 # If you want POSIX.1 compatibility, use `America/New_York'.
303 posixrules = America/New_York
306 # Where to install the "posixrules" timezone file; this is file
307 # whose contents $(posixrules) specifies. If this is a relative
308 # pathname, it is relative to $(zonedir).
309 ifndef posixrules-file
310 posixrules-file = posixrules
314 # Directory where your system's native header files live.
315 # This is used on Unix systems to generate some GNU libc header files.
317 sysincludedir = /usr/include
321 # Commands to install files.
323 INSTALL_DATA = $(INSTALL) -m 644
325 ifndef INSTALL_SCRIPT
326 INSTALL_SCRIPT = $(INSTALL)
328 ifndef INSTALL_PROGRAM
329 INSTALL_PROGRAM = $(INSTALL)
336 # The name of the C compiler.
337 # If you've got GCC, and it works, use it.
338 ifeq ($(origin CC),default)
342 # The name of the C compiler to use for compilations of programs to run on
343 # the host that is building the library. If you set CC to a
344 # cross-compiler, you must set this to the normal compiler.
349 # Default flags to pass the C compiler.
350 ifndef default_cflags
351 ifeq ($(release),stable)
352 default_cflags := -g -O2
354 default_cflags := -g -O
358 # Flags to pass the C compiler when assembling preprocessed assembly code
359 # (`.S' files). On some systems the assembler doesn't understand the `#' line
360 # directives the preprocessor produces. If you have troubling compiling
361 # assembly code, try using -P here to suppress these directives.
366 # ELF always supports init/fini sections
371 # Installed name of the startup code.
372 ifneq ($(have-initfini),yes)
373 # When not having init/fini, there is just one startfile, called crt0.o.
374 start-installed-name = crt0.o
376 # On systems having init/fini, crt0.o is called crt1.o, and there are
377 # some additional bizarre files.
378 start-installed-name = crt1.o
380 # On systems that do not need a special startfile for statically linked
381 # binaries, simply set it to the normal name.
382 ifndef static-start-installed-name
383 static-start-installed-name = $(start-installed-name)
386 ifeq (yesyesyes,$(build-shared)$(elf)$(have-z-combreloc))
387 combreloc-LDFLAGS = -Wl,-z,combreloc
388 LDFLAGS.so += $(combreloc-LDFLAGS)
389 LDFLAGS-rtld += $(combreloc-LDFLAGS)
392 # Command for linking programs with the C library.
394 +link = $(CC) -nostdlib -nostartfiles -o $@ \
395 $(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
396 $(combreloc-LDFLAGS) \
397 $(addprefix $(csu-objpfx),$(start-installed-name)) \
398 $(+preinit) $(+prector) \
399 $(filter-out $(addprefix $(csu-objpfx),start.o \
400 $(start-installed-name))\
401 $(+preinit) $(link-extra-libs) \
402 $(common-objpfx)libc% $(+postinit),$^) \
403 $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
405 # Command for statically linking programs with the C library.
407 +link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
408 $(sysdep-LDFLAGS) $(LDFLAGS) \
409 $(addprefix $(csu-objpfx),$(static-start-installed-name)) \
410 $(+preinit) $(+prector) \
411 $(filter-out $(addprefix $(csu-objpfx),start.o \
412 $(start-installed-name))\
413 $(+preinit) $(link-extra-libs-static) \
414 $(common-objpfx)libc% $(+postinit),$^) \
415 $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
417 # Command for statically linking bounded-pointer programs with the C library.
419 +link-bounded = $(CC) -nostdlib -nostartfiles -static -fbounded-pointers -o $@ \
420 $(sysdep-LDFLAGS) $(LDFLAGS) \
421 $(addprefix $(csu-objpfx),b$(static-start-installed-name)) \
422 $(+preinit) $(+prector) \
423 $(filter-out $(addprefix $(csu-objpfx),start.ob \
424 $(start-installed-name))\
425 $(+preinit) $(link-extra-libs-bounded) \
426 $(common-objpfx)libc% $(+postinit),$^) \
427 $(link-extra-libs-bounded) $(link-libc-bounded) $(+postctor) $(+postinit)
429 ifndef config-LDFLAGS
430 ifeq (yesyes,$(build-shared)$(elf))
431 config-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
435 ifeq (yes,$(build-shared))
437 # We need the versioned name of libc.so in the deps of $(others) et al
438 # so that the symlink to libc.so is created before anything tries to
439 # run the linked programs.
440 link-libc = -Wl,-rpath-link=$(rpath-link) \
441 $(common-objpfx)libc.so$(libc.so-version) \
442 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
443 # This is how to find at build-time things that will be installed there.
444 rpath-dirs = math elf dlfcn nss nis rt resolv crypt
446 ifneq (,$(filter aix aix%,$(config-os)))
447 link-libc = $(common-objpfx)libc.a \
448 $(common-objpfx)$(patsubst %,$(libtype.oS),c) $(gnulib)
449 rpath-dirs = math dlfcn nss nis rt resolv crypt
453 $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
454 elfobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)elf)
456 nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
457 resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
458 link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
462 # Differences in the linkers on the various platforms.
464 LDFLAGS-rpath-ORIGIN = -Wl,-rpath,'$$ORIGIN'
465 LDFLAGS-soname-fname = -Wl,-soname,$(@F)
466 LDFLAGS-rdynamic = -rdynamic
467 LDFLAGS-Bsymbolic = -Bsymbolic
469 ifneq (,$(filter aix aix%,$(config-os)))
470 LDFLAGS-rpath-ORIGIN =
471 LDFLAGS-soname-fname =
472 LDFLAGS-rdynamic = -Wl,-bdynamic
473 LDFLAGS-Bsymbolic = -Wl,-bsymbolic
477 # Choose the default search path for the dynamic linker based on
478 # where we will install libraries.
479 ifneq ($(libdir),$(slibdir))
480 default-rpath = $(slibdir):$(libdir)
482 default-rpath = $(libdir)
485 ifndef link-extra-libs
486 ifeq (yes,$(build-shared))
487 ifneq ($(common-objpfx),$(objpfx))
488 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),\
489 $(wildcard $(common-objpfx)$(lib).so$($(notdir $(lib)).so-version) \
490 $(objpfx)$(lib).so$($(notdir $(lib)).so-version)))
492 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).so$($(notdir $(lib)).so-version))
495 link-extra-libs = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
499 # The static libraries.
500 ifeq (yes,$(build-static))
501 link-libc-static = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
502 link-extra-libs-static = $(foreach lib,$(LDLIBS-$(@F)),$(common-objpfx)$(lib).a)
504 ifeq (yes,$(build-shared))
505 # We can try to link the programs with lib*_pic.a...
506 link-libc-static = $(gnulib) $(common-objpfx)libc_pic.a
507 link-extra-libs-static = $(link-extra-libs)
510 link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
511 link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a)
514 gnulib := -lgcc -lgcc_eh
517 +preinit = $(addprefix $(csu-objpfx),crti.o)
518 +postinit = $(addprefix $(csu-objpfx),crtn.o)
519 +prector = `$(CC) --print-file-name=crtbegin.o`
520 +postctor = `$(CC) --print-file-name=crtend.o`
521 +interp = $(addprefix $(elf-objpfx),interp.os)
523 csu-objpfx = $(common-objpfx)csu/
524 elf-objpfx = $(common-objpfx)elf/
526 # How to run a program we just linked with our library.
527 # The program binary is assumed to be $(word 2,$^).
528 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
529 ifeq (yesyes,$(build-shared)$(elf))
531 sysdep-library-path = \
532 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
533 $(filter -Wl$(comma)-rpath-link=%,\
534 $(sysdep-LDFLAGS)))))
535 run-program-prefix = $(if $(filter $(notdir $(built-program-file)),\
537 $(elf-objpfx)$(rtld-installed-name) \
538 --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)))
542 # Never use $(run-program-prefix) for the statically-linked %-bp test programs
543 built-program-cmd = $(patsubst %,$(run-program-prefix),\
544 $(filter-out %-bp,$(built-program-file))) \
545 $(built-program-file)
555 # Extra flags to pass to GCC.
556 ifeq ($(all-warnings),yes)
557 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes -Wcast-qual -Wbad-function-cast -Wmissing-noreturn -Wmissing-prototypes -Wmissing-declarations -Wcomment -Wcomments -Wtrigraphs -Wsign-compare -Wfloat-equal -Wmultichar
559 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes
562 # This is the program that generates makefile dependencies from C source files.
563 # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
564 # targets for headers so that removed headers don't break the build.
566 +mkdep = $(CC) -M -MP
569 # The program that makes Emacs-style TAGS files.
572 # The `m4' macro processor; this is used by sysdeps/sparc/Makefile (and
573 # perhaps others) to preprocess assembly code in some cases.
576 # To force installation of files even if they are older than the
577 # installed files. This variable is included in the dependency list
578 # of all installation targets.
579 ifeq ($(force-install),yes)
580 +force = force-install
586 #### End of configuration variables.
589 # This tells some versions of GNU make before 3.63 not to export all variables.
592 # We want to echo the commands we're running without
593 # umpteen zillion filenames along with it (we use `...' instead)
594 # but we don't want this echoing done when the user has said
595 # he doesn't want to see commands echoed by using -s.
596 ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
597 +cmdecho := echo >/dev/null
602 # These are the flags given to the compiler to tell
603 # it what sort of optimization and/or debugging output to do.
605 # If `CFLAGS' was defined, use that.
607 +cflags := $(filter-out -I%,$(CFLAGS))
611 # If none of the above worked, default to "-g -O".
612 ifeq "$(strip $(+cflags))" ""
613 +cflags := $(default_cflags)
614 endif # $(+cflags) == ""
616 +cflags := $(+cflags) $(+gccwarn)
619 # Don't duplicate options if we inherited variables from the parent.
620 +cflags := $(sort $(+cflags))
623 # These are flags given to the C compiler to tell it to look for include
624 # files (including ones given in angle brackets) in the current directory,
625 # in the parent library source directory and in the include directory.
626 # `+sysdep-includes' will be defined by Makerules.
627 +includes = -I$(..)include -I. \
628 $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \
629 $(libio-include) $(includes) \
630 $(+sysdep-includes) $(sysincludes)
632 # Since libio has several internal header files, we use a -I instead
633 # of many little headers in the include directory.
634 libio-include = -I$(..)libio
636 # These are the variables that the implicit compilation rules use.
637 # Note that we can't use -std=* in CPPFLAGS, because it overrides
638 # the implicit -lang-asm and breaks cpp behavior for .S files--notably
639 # it causes cpp to stop predefining __ASSEMBLER__.
640 CPPFLAGS = $($(subdir)-CPPFLAGS) $(+includes) $(defines) \
641 -include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
642 $(CPPFLAGS-$(suffix $@)) \
643 $(foreach lib,$(libof-$(basename $(@F))) \
644 $(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
645 $(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
646 override CFLAGS = -std=gnu99 \
647 $(filter-out %frame-pointer,$(+cflags)) $(sysdep-CFLAGS) \
648 $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) $(CFLAGS-$(@F))
650 # If everything is compiled with -fPIC (implicitly) we must tell this by
651 # defining the PIC symbol.
652 ifeq (yes,$(build-pic-default))
656 # Enable object files for different versions of the library.
657 # Various things use $(object-suffixes) to know what all to make.
658 # The compilation rules use $(CPPFLAGS-${SUFFIX}) and $(CFLAGS-${SUFFIX})
659 # to pass different flags for each flavor.
660 libtypes = $(foreach o,$(object-suffixes-for-libc),$(libtype$o))
661 all-object-suffixes := .o .os .op .og .ob .oS
663 CPPFLAGS-.o = $(pic-default)
664 CFLAGS-.o = $(filter %frame-pointer,$(+cflags))
665 ifeq (yes,$(build-static))
667 object-suffixes += .o
669 ifeq (yes,$(build-shared))
670 # Under --enable-shared, we will build a shared library of PIC objects.
671 # The PIC object files are named foo.os.
672 object-suffixes += .os
673 CPPFLAGS-.os = -DPIC -DSHARED
674 CFLAGS-.os = $(filter %frame-pointer,$(+cflags)) $(pic-ccflag)
675 libtype.os := lib%_pic.a
676 # This can be changed by a sysdep makefile
678 # This one should always stay like this unless there is a very good reason.
681 ifeq (yes,$(build-profile))
682 # Under --enable-profile, we will build a static library of profiled objects.
683 # The profiled object files are named foo.op.
684 object-suffixes += .op
685 CPPFLAGS-.op = -DPROF $(pic-default)
687 libtype.op = lib%_p.a
689 ifeq (yes,$(build-omitfp))
690 # Under --enable-omitfp, we build the library optimized without
691 # debugging information using -fomit-frame-pointer, and build an extra
692 # library with debugging information. The debuggable objects are named foo.og.
693 object-suffixes += .og
694 CPPFLAGS-.og = $(pic-default)
696 CFLAGS-.o = $(filter %frame-pointer,$(+cflags)) -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
697 CFLAGS-.os += -g0 -O99 -fomit-frame-pointer -D__USE_STRING_INLINES
698 libtype.og = lib%_g.a
702 ifeq (yes,$(build-bounded))
703 # Under --enable-bounded, we build the library with `-fbounded-pointers -g'
704 # to runtime bounds checking. The bounded-pointer objects are named foo.ob.
705 # We disable sibling-call optimizations so that stack traces will be complete
706 # and thus aid debugging, since after all, BPs are a debugging tool.
707 object-suffixes += .ob
708 CPPFLAGS-.ob = -fbounded-pointers $(pic-default)
709 CFLAGS-.ob = -g -O2 -fno-optimize-sibling-calls -fno-strict-aliasing
710 libtype.ob = lib%_b.a
713 object-suffixes-for-libc := $(object-suffixes)
715 ifeq (yes,$(build-shared))
716 # Build special library that contains the static-only routines for libc.
717 object-suffixes-for-libc += .oS
719 # Must build the routines as PIC, though, because they can end up in (users')
720 # shared objects. We don't want to use CFLAGS-os because users may, for
721 # example, make that processor-specific.
722 CFLAGS-.oS = $(CFLAGS-.o) $(PIC-ccflag)
723 CPPFLAGS-.oS = $(CPPFLAGS-.o) -DPIC -DLIBC_NONSHARED=1
724 libtype.oS = lib%_nonshared.a
727 # The assembler can generate debug information too.
729 ifeq ($(have-cpp-asm-debuginfo),yes)
730 ASFLAGS := $(filter -g%,$(CFLAGS))
735 ASFLAGS += $(ASFLAGS-config)
737 +gnu-stabs = $(shell echo>&2 '*** BARF ON ME')
743 move-if-change = $(SHELL) $(..)scripts/move-if-change
745 -include $(common-objpfx)sysd-dirs
747 ifeq ($(sysd-dirs-done),t)
748 -include $(common-objpfx)sysd-sorted
749 subdirs = $(sorted-subdirs)
752 ifeq (yes, $(build-shared))
754 # This is a pair of implicit rules to preprocess a file with # comments,
755 # %ifdef et al, based on config.h settings or other %include'd files.
756 # We use chained rules instead of a pipeline here so that we can properly
757 # check the exit status of cpp rather than using its bad output when there
758 # is a preprocessing error. Another rule should depend on the output file
759 # `FOO.v', and along with that `FOO.v.i' should be given dependencies
760 # listing both its input files, and any header files that it may reference
762 %.v.i: $(common-objpfx)config.h
763 sed '/^[ ]*#/d;s/^[ ]*%/#/' $(filter-out FORCE %.h,$^) \
764 | $(CC) -E -undef $(CPPFLAGS) \
765 -DASSEMBLER -x assembler-with-cpp - \
769 sed '/^[ ]*#/d;/^[ ]*$$/d' $< > $@T
772 # Process the shlib-versions file, which tells us what shared library
773 # version numbers to use when we install shared objects on this system.
774 # We need to wait until $(subdirs) is complete.
775 ifeq ($(sysd-sorted-done),t)
776 -include $(common-objpfx)soversions.mk
777 ifndef avoid-generated
778 $(common-objpfx)shlib-versions.v.i: \
779 $(..)shlib-versions $(wildcard $(patsubst %, $(..)%/shlib-versions,\
782 $(common-objpfx)soversions.i: $(common-objpfx)shlib-versions.v
783 default_setname='$(filter-out %_default,$(oldest-abi:%=GLIBC_%))'; \
784 while read conf version setname; do \
785 test -n "$$version" && \
786 test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
787 : "$$conf"` != 0 || continue; \
788 if test "x$$version" = xDEFAULT; then \
789 default_setname="$$setname"; \
791 $(abi-default_setname) \
792 lib=`echo $$version | sed 's/=.*$$//'`; \
793 if eval test -z "\$${versioned_$${lib}}"; then \
794 eval versioned_$${lib}=yes; \
795 number=`echo $$version | sed "s/^.*=//"`; \
796 echo $$lib $$number $${setname:-$${default_setname}}; \
799 done < $< > $@T; exit 0
801 $(common-objpfx)soversions.mk: $(common-objpfx)soversions.i
802 (while read lib number setname; do \
804 [0-9]*) echo "$$lib.so-version=.$$number"; \
805 echo "all-sonames+=$$lib=$$lib.so\$$($$lib.so-version)";;\
806 *) echo "$$lib.so-version=$$number"; \
807 echo "all-sonames+=$$lib=\$$($$lib.so-version)";;\
810 echo soversions.mk-done = t;) < $< > $@T; exit 0
815 postclean-generated += soversions.mk soversions.i \
816 shlib-versions.v shlib-versions.v.i
818 # Generate the header containing the names of all shared libraries.
819 # We use a stamp file to avoid uncessary recompilations.
820 before-compile += $(common-objpfx)gnu/lib-names.h
821 ifeq ($(soversions.mk-done),t)
822 $(common-objpfx)gnu/lib-names.h: $(common-objpfx)gnu/lib-names.stmp; @:
823 ifneq (,$(findstring aix,$(config-os)))
824 $(common-objpfx)gnu/lib-names.stmp: $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h
825 $(make-target-directory)
826 @rm -f ${@:stmp=T} $@
827 @cp $(..)sysdeps/unix/sysv/aix/gnu/lib-names.h $(common-objpfx)gnu
830 $(common-objpfx)gnu/lib-names.stmp: $(common-objpfx)soversions.mk
831 $(make-target-directory)
832 @rm -f ${@:stmp=T} $@
833 (echo '/* This file is automatically generated.';\
834 echo ' It defines macros to allow user program to find the shared';\
835 echo ' library files which come as part of GNU libc. */';\
836 echo '#ifndef __GNU_LIB_NAMES_H'; \
837 echo '#define __GNU_LIB_NAMES_H 1'; \
839 (libs='$(all-sonames)';\
840 for l in $$libs; do \
841 name=`echo $$l | sed 's/.*=//'`; \
842 upname=`echo $$l | sed 's/=.*//' | \
843 tr 'abcdefghijklmnopqrstuvwxyz-' \
844 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
845 upname2=`echo $$name | sed 's/[.]so.*//' | \
846 tr 'abcdefghijklmnopqrstuvwxyz-' \
847 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`; \
848 echo "#define $${upname}_SO \"$$name\""; \
849 if test $$upname != $$upname2; then \
850 echo "#define $${upname2}_SO \"$$name\""; \
854 echo '#endif /* gnu/lib-names.h */';) > ${@:stmp=T}
855 $(move-if-change) ${@:stmp=T} ${@:stmp=h}
860 common-generated += gnu/lib-names.h gnu/lib-names.stmp
862 # The name under which the run-time dynamic linker is installed.
863 # We are currently going for the convention that `/lib/ld.so.1'
864 # names the SVR4/ELF ABI-compliant dynamic linker.
865 ifndef rtld-installed-name
867 rtld-installed-name = $(ld.so-version)
869 rtld-installed-name = ld.so.1
873 ifndef rtld-version-installed-name
874 rtld-version-installed-name = ld-$(version).so
882 ifeq ($(build-shared),yes)
883 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
885 libdl = $(common-objpfx)dlfcn/libdl.a
888 ifneq (,$(findstring aix,$(config-os)))
889 ifeq ($(build-shared),yes)
891 libdl = $(common-objpfx)dlfcn/libdl.so$(libdl.so-version)
893 # No libdl without shared libs on AIX
898 # No ELF, no AIX - no libdl, at least for now.
904 # These are the subdirectories containing the library source. The order
905 # is more or less arbitrary. The sorting step will take care of the
906 # dependencies. Only the $(binfmt-subdir) should always be kept at the
908 all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
909 stdlib stdio-common libio malloc string wcsmbs time dirent \
910 grp pwd posix io termios resource misc socket sysvipc gmon \
911 gnulib iconv iconvdata wctype manual shadow po argp \
912 crypt $(add-ons) nss localedata timezone rt conform debug \
913 $(sysdep-subdirs) $(dlfcn) $(binfmt-subdir)
914 all-subdirs := $(filter-out $(sysdep-inhibit-subdirs),$(all-subdirs))
916 # The mach and hurd subdirectories have many generated header files which
917 # much of the rest of the library depends on, so it is best to build them
918 # first (and mach before hurd, at that). The before-compile additions in
919 # sysdeps/{mach,hurd}/Makefile should make it reliably work for these files
920 # not to exist when making in other directories, but it will be slower that
921 # way with more somewhat expensive `make' invocations.
922 subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
923 $(filter-out mach hurd,$(subdirs))
925 ifndef avoid-generated
926 all-Subdirs-files = $(wildcard $(config-sysdirs:%=$(..)%/Subdirs))
927 $(common-objpfx)sysd-dirs: $(common-objpfx)config.make $(all-Subdirs-files)
928 $(AWK) 'BEGIN { subdirs = ""; inhibit = "" }; \
930 /^[^-]/ { subdirs = subdirs " " $$0 }; \
931 /^-/ { inhibit = inhibit " " substr($$0, 2) }; \
932 END { printf "sysdep-subdirs =%s\n", subdirs; \
933 printf "sysdep-inhibit-subdirs =%s\n", inhibit; \
934 print "sysd-dirs-done = t" }' \
935 $(patsubst $<,/dev/null,$^) > $@-tmp
938 all-Depend-files = $(wildcard $(..)*/Depend)
939 $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk $(all-Depend-files) \
940 $(common-objpfx)sysd-dirs $(..)Makeconfig
941 { { dirs='$(patsubst $(..)%/Depend,%,$(filter %/Depend,$^))'; \
942 for d in $$dirs; do \
944 echo "depend $$d $$on"; \
945 done < $(..)$$d/Depend; \
947 for f in $(all-subdirs); do \
950 } | $(AWK) -f $< && \
951 echo sysd-sorted-done = t; \
956 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
957 sysdep-makeconfigs := $(wildcard $(patsubst %,$(..)%/Makeconfig,\
958 $(config-sysdirs) $(add-ons)))
960 ifneq (,$(sysdep-makeconfigs))
961 include $(sysdep-makeconfigs)
965 endif # Makeconfig not yet included